نتایج جستجو برای: vermiculite

تعداد نتایج: 893  

2011

Arbuscular Mycorrhizal (AM) fungi hold considerable potential for use as inoculant and nowadays much attention is focused on mass production of AM fungal inoculum, since this is of paramount importance in improving plant production in agriculture and horticulture. However, effectivity of these fungi on crop growth relies on their production practices, typically the substrate selected for its ma...

Journal: :Buildings 2023

Global temperatures have led to an increasing need for air conditioning systems. So, because of this fact, buildings been improved in terms their thermal and energy efficiency. Regarding this, the Brazilian standard ABNT NBR 15.575-4/2013 set minimum parameters transmittance capacity sealing elements, which allow classifying efficiency building. In order comply with requirements, usage study li...

Journal: :The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists 1961

Journal: :Inhalation toxicology 2006
James Kelly Gregory C Pratt Jean Johnson Rita B Messing

Western Mineral Products/W. R. Grace operated a vermiculite plant in a mixed industrial/residential area of northeast Minneapolis from 1936 to 1989. The plant processed vermiculite ore contaminated with amphibole asbestos from a mine in Libby, MT. Air monitoring in the early 1970s found fiber concentrations in excess of 10 fibers per cubic centimeter of air (f/cc), indicating that worker exposu...

Journal: :iranian journal of environmental technology 0
badri fazeli m.sc. of microbiology, university of isfahan, iran giti emtiazi professor of microbiology, university of isfahan, iran

denitrification is a reduction of nitrate by heterotrophic and autotrophic bacteria that may ultimately produce molecular nitrogen (n2) through a series of intermediate nitrogen compounds.vermiculite is a hydrous phyllosilicate mineral (mg, fe+2,fe+3)3[(al,si)4o10](oh)2·4h2o with several layers for bacterial immobilization. the goal of this study was removal of nitrate from water with vermiculi...

2013
Rogayah Sekeli Janna Ong Abdullah Parameswari Namasivayam Pauziah Muda Umi Kalsom Abu Bakar

A high survival rate for transformed papaya plants when transferred to the field is useful in the quest for improving the commercial quality traits. We report in this paper an improved rooting method for the production of transformed Malaysian Eksotika papaya with high survival rate when transferred to the field. Shoots were regenerated from embryogenic calli transformed with antisense and RNAi...

Journal: :Construction and Building Materials 2022

Vermiculite is a hydrous clay mineral that occasionally occurs in raw materials for brickmaking. The presence of vermiculite affects the drying and firing processes brick production; thus, functions this should be clarified. In study, from 0 wt% to 30 have been added mixtures button firing. Through effective integration in-situ XRD, thermogravimetric dilatometric analyses, real-time thermal beh...

2011
V. Tu J. Baumeister R. Metcalf A. Olsen

Introduction: In the search for life on Mars nearsurface soil environments may be important habitats for life accessible to future missions. Serpentinite rocks have been documented on Mars [1], as well as other clay minerals including smectite and kaolinites [2, 3]. Previous studies of soils formed on serpentinites on Earth have documented the formation of extensive clays, including smectite [4...

Journal: :Journal of the Ceramic Society of Japan 2000

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